I think they're quoting mash numbers not brew house, I set BS at 68% and it hovers in between 68 to 72%.My problems are the lack of efficiency, people claim 80% I got 69% once and was really happy. I am not sure if I work eff out different but I get 73% with 3v and fly sparge
I get 2.5lt or so for my 23lt batches. I use a grain bag for hop additions which helps with hop trub.In your experience with BIAB, do you get more trub than with traditional mashing (in a cooler, sparging, etc).
How much Trub do you get for a 5 gallon (20 liter) batch?
I transfer a bit of hot break, cold break, trub or whatever you want to call it into my no chill cube & add the whole cube to the fermenter which has a little bit of crap settled out on the bottom. I tried to eliminate it in the past & not get it into the fermenter but it made no difference to the finished beers. I use a grain bag for hops too & the 40lt urn is brilliant.I BIAB in a 40L Urn. I brew 20L batches and estimate my trub at 3L in my calcs. I've never done any other AG brewing technique so couldn't compare. I used to worry about the trub collecting in my Jerry Can but not now. Its all good. One other thing, I've always used a Hop sock so I don't have hop trub. Making great beer so the trub thing doesn't bother me.